Type-writing machine.



J. B. HENNESSY; TYPE WRITING MACHINE.

APPLICATION IILBD PPR. 20. 1907.

INVENTIIJR HIS/ATTORNEY PATENTED APR. 21, 1908.

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'PATENTED APR. 21, 1908 BJHENNE'SSY. TYPE WRITING MACHINE. APPLICATIONFILED FEB. 20. 1901.

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H15 ATTUR-NEY THE NORRIS Pznms ca, wlsnmcrong, 0.x

UNITED STATES PATENT OFFICE.

JOHN B. HENNESSY, OF NEW YORK, N. Y., ASSIGNOR TO THE MONARCH TYPEWRITERCOM- PANY, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.

TYPE-WRITING MACHINE Specification of Letters Patent.

Patented April 21, 1908.

To all whom it may concern:

Be it known that I, JOHN B. HENNEssY, citizen of the United States, andresident of the borough of Brooklyn, city of New York, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Type-Writing Machines, of which the following is aspecification.

My invention relates to typewriting machines and more particularly totype bar and hanger constructions and the objects of said invention areto provide sim le and efficient means for preventing latera and alsoendwise movements of the type bars and thus preserving the alinement ofthe writing.

To the above and other ends which will hereinafter appear my inventionconsists of the features of construction, arrangements of parts andcombinations of devices to be set forth in the following specificationand particularly pointed out in the appended claims.

In the accompanying drawings, Figure .1'

is an enlarged detail side elevation of a type bar and hanger embodyingmy invention, fragments of the type bar segment and platen being shownin this view. Fig. '2 is a transverse sectional view of the same takenon the line 2c0c of Fig. 1 and looking in the direction of the arrow atsaid lines, four type bars only being shown in this view. Fig. 3 is anenlarged side elevation partly in section of the type bar and han er,the type bar being shown in the normal position. Fig. 4 is an enlargedfragmentary side elevation of a type bar and hanger, the type bar beingshown in printing position. Fig. 5 is an enlarged fragmentaryrearelevation of a type bar and hanger, the parts being shown with the typebar in the printing position and as viewed from the'direction of thearrow in Fig. 4. n 1

In the various views, like reference characters indicate correspondingparts.

When wear occurs at the pivot bearing,

.the type bar is apt to move laterally or endwise or both as it swingstothe printing position and thus impair the alinement of the typeimpressions.

By my present invention I provide means for reducing the liability ofthe type bar bearings to wear and for holding the type bar in properworking position even though some wear has occurred, and thus prevent orreduce to the mmlmum defective ahnement of the Writing.

The segment 1 constitutes a support for a I series of segmentallyarranged radially disposed type bar hangers 2 to which a series of typebars 3 are pivoted, the type bars striking u wardly and rearwardlyagainst the front ace of a platen 4. Each hanger,

designated as a whole by the reference numeral 2, preferably comprises abifurcated member of substantially U-shape and made of sheet metal. Thepivot bearing arms 5 of each hanger are spaced apart to receive a typebar between them and to provide widely separated bearings for the pivotof the type bar, said pivot comprising trunnionlike projections 6 whichextend outwardly from opposite sides of the type bar and are seated inbearings or openings 6 in the hanger arms. A rivet 7 extends between thearms of each hanger to prevent separation of the arms. The shank of aheaded screw 8 passes through the space between the arms of each hangerat the root portion 9 thereof, the threaded end of the screw taking intoa tapped hole 10 in the segment and the head of the screw bearingagainst the front face of the hanger to secure it in place.

Each hanger arm is cut, as indicated at 11 in Fig. 3, to provide afinger or abutment. 12, which is bent inwardly at its free end as shownin Fig. 5 so that the inner side of the finger is adapted to bearagainst a side of the type bar and guide and support it as it approachesthe printing position. An eccentric 13 is provided on each side of thetype bar. These eccentrics may be formed either integral with thetrunnions or on the sides of the bar proper. They cooperate with ends ofthe fingers 12 to support the pivot and type bar in the proper pivotalposition at the printing moment. Furthermore, if there be any wear onthe pivot or of its bearing causing looseness or end play or shake ofthe type bar, the eccentrics will operate with the fingers to lift thetype bar to proper pivotal p0 sition, thus for the printing instantautomatically taking up the looseness and preserving the alinement. Theconstruction and arrangement of the parts are such that theeccentrics,supports or contacts 13 are normally out of engagement with the freeends of the fingers 12, as indicated in Fig. 3.

As the type barv moves to theprinting position the highest portions ofthe eccentrics are moved downwardly and at or about the time the typeprints the eccentrics are brought 'otal axis thereof.

into contact with the ends of the fingers 12, and the type bar is thusforced to be in proper working position at the moment of typeimpression. By this same movement the heel of the type bar is broughtbetween the fingers 12 so that the sides of the fingers bear uponopposite sides of the heel-of the type bar and guide it transversely inits printing movement. 7

When the type bar has reachedthe printing position, as shown in Fig. 4,the eccentrics 13 willhavevbeen brought into contact with the ends ofthe fingers 12 and the heel of the type bar will be embraced by thesides of the fingers so as to prevent any lateral or endwise' movementwhatever of the type bar, should there be any wear or looseness at thepivotal bearings.

It will be understood that the sides of the fingers contacting with theheel of the type bar at a considerable distance from the pivotal centerof the type bar act as an efiicient guide for the type bar. As neitherthe eccentrics nor the heel of the type bar cooperate with the fingersuntil the type bar has almost completed its movement towards the platen,the guiding and supporting devices do not offer any resistance to'theinitial printing movement of the type bar and at the printing momentwhen these devices come into play there is no perceptible resistance totouch owing to the momentum of the type bar.

It will be seen that the'effective surfaces of the fingers 12 whichcooperate with the sides of the type bar are in planes parallel to thetype bar, whereas the contact faces of the eccentric 13 cooperate withthe ends of the fingers in a linewhich is at right angles to said planesand at right angles to the plane ofmovement of the type bar and parallelto the piv- It will be understood, therefore, that if there is any lostmotion in the pivotal bearings because of wear on the parts or for anyother reason, such lost motion will be automatically taken up at thelast portion of the printing stroke. Furthermore, there will not be asmuch wear between the fingers 12 and the parts which cooperate therewithas there is at the pivotal bearings,

because the fingers and the parts which coopcrate therewith are onlybrought into slight and momentary contact.

As hereinbefore pointed out, the inner sides of the fingers cooperateonly with the sides of the type bar to prevent lateral shake of the typebar in its bearing, whereas the eocentrics13 cooperate only with theends of the fingers to prevent end shake of the type bar so thatindependent means are'provided for preventing the shake of the type barin two directions at right angles to each other. It will also beunderstood that the fingers 12 are preferably constructed so that theymay be bent slightly to render them adjustable in order that the contactfaces thereon may be the same be due to wear or occur in manufacture. Inother words, the fingers may be bent towards or away from each other toproperly co-act with the sides of the type bar or they may be bent so asto carry the ends of the fingers nearer to or further from theeccentrics 13, thus taking care of wear whether it occur at the tops orbottoms of the ivot bearings.

T 1e heel of each type bar is recessed as indicated at 14 for thereception of one end of a link 15 pivotally connected to the type bar at16 and connected at its other end to suitable devices for actuating thetype bar.

From a broad aspect of my invention it is not necessary that the member12 be carried by or made part of the hanger.

The fingers 12 being connected may be regarded as one part or they maybe regarded as two parts. The two eccentrics 13 of each type bar beingpreferably formed as a part of the type bar and its trunnion-likepivotal projections may likewise be regarded as one part or they may beregarded as two eccentrics separated from each other by the type bar Itwill be understood of course that when the eccentrics cooperate with theends of the fingers or abutments to support and properly position thetype bar, there is no binding or wedging effect sufficient to cause thetype bar to stick and fail to rebound from the platen, and likewise theinner sides of the fingers 12, when they cooperate with the sides of thetype bar, do so without causing undue friction and liability of the typebar to stick as aforesaid.

In a front strike machine, the most troublesome type bars are thosesituated near the ends of the segment where the wear is greatest andtakes place at more points than in the center of the system of typebars. If there is lateral shake in a side bar due to wear of the pivotsor to wear of the bearings, gravity of the type bar tends to keep itnearer one arm of the hanger than the other, in the ordinaryconstruction, but by my improvement one of the arms or fingers 12 willproperly position the type bar laterally bar swings becforc the comple-In other words,

when the heel of the type tween the fingers 12 just tion of the printingstroke.

at this time the type bar is forced laterally by the lowermost inger andthe extent to which it is moved is limited by the uppermost finger, thetwo fingers forming together a centering guide for the type bar. Again,where there is side shake to the type bar, as just above explained, thetype bar ordinarily is apt to print variously above or below the line,according to the character of the blow upon the key, but by my inventionthis objection is practically cured regardless of the force of the blowon the key, because any rise or fall of such side bar from the truecentral position iscorrected by the guiding fingers 12 just before thetype prints and when the heel of the ty e bar enters between thetapering jaws or si es of the fingers. As heretofore explained, theendwise shake of the type bar is taken care of more particularly by theeccentrics and the ends of the fingers when wear occurs on the upper orlower sides of the pivots or of the pivot seats or bearings, although,of course, the eccentrics and the ends of the fingers also co-act toprevent side shake of the bar, when such wear takes place.

It will be seen that the eccentrics 13 are arranged on the sides of thetype bar adjacent to the pivotal portions thereof that these contactscooperate with the fingers or alining jaws 12 at the final portion ofthe printing stroke to lift the type bar in the direction of its lengthand to mechanically adjust the same both laterally and longitudinally;that said jaws 12 project towards the pivot of the type bar and thatportion of the inner walls of said jaws are tapering or inclined whileother portions of said walls are parallel with each other and parallelwith the hanger arms and cooperate with the body of the type bar forwardof its pivot.

While I have described one means for carrying out my invention, it willbe understood that various changes may be made without departing from myinvention.

What I claimas new and desire to secure by Letters Patent, is

1. In a typewriting machine, the combination of a pivoted type bar, afixed abutment terminating close to the pivot of the type bar, and acontact on the type bar at the pivotal portion thereof which 006 erateswith said abutment along a line paral el with the pivotal axis of thetype bar at the last portion of the printing stroke.

2. In a typewriting machine, the combination of a type bar, an abutment,and an eccentric on the type bar, said eccentric being normally out ofcontact with said abutment .but adapted to be brought into cooperationtherewith at the last portion of the printing stroke.

3. In a typewriting machine, the combination of a pivoted type bar, anabutment fixed against swinging movement, and an eccentric on the typebar which contacts with said abutment in a line parallel with thepivotal axis of the type bar and on opposite sides of the type bar atthe last portion of the printing stroke.

4. In a typewritingmachine, the combination of a type bar, a hanger, andan eccentric on the type bar which is brought into contact with a partof the hanger when the type bar is about to print. I

5. In a typewriting machine, the combination of a ty e bar, a hanger, aneccentric on each side 0 the type bar, and abutments on the hanger, theperiphery of each eccentric being brought into contact with itsassociated abutment at the'last portion of the printing stroke.

8. In a typewriting machine, the combination of a hanger, a type barprovided with a pivot formed of trunnion-like projections on the typebar, an eccentric carried by the said pivot, and an abutment on thehanger with which said eccentric is brought into cooperation at the lastportion of the printing stroke.

9. In a typewriting machine, the combination of a hanger, a type barprovided with a pivot formed of trunnion-like rojections on the typebar, eccentrics carried by said pivot on opposite sides of the type bar,and abutments on the hanger with which said eccentrics are brought intocooperation at the last ortion of the printing stroke, the contactetween the eccentrics and said abutments being in a line parallel to thepivotal axis of the ty e bar.

10. n a typewriting machine, the combination of a type bar, a hanger,abutments on the hanger on opposite sides of the type bar, and abutmentscarried by the type bar on oppositesides thereof and which are broughtinto cooperative relation with the abutments on the hanger at the lastportion of the printing stroke. I

11. In a typewriting machine, the combination of a hanger, and a typebar pivoted thereto, the hanger being bifurcated to receive the type barand having fingers which project inwardly from the pivot receiving armsthereofand bear against the sides of the type bar to guide the same inits movement to the rinting position. 12. n a typewriting machine, thecombination of a hanger, a type bar pivoted thereto and having contactdevices, said hanger being bifurcated to receive the type bar and havingfingers which project inwardly from the pivot receiving arms thereof andwhich are provided with two sets of contact faces,

one set of said faces being adapted to bear against the sides of thetype bar in its movement to the printing position, and the other set ofcontact faces on the fingers being the printing stroke.

eccentrics on one of said members which come into contact with saidfingers at the last portion of the printing stroke.

14. In a typewriting machine, the combination of a bifurcated hanger, atype bar pivoted between the arms of said hanger, and fingers whichproject inwardly from said arms and bear against the sides of the typebar.

15. In a'typewriting machine, the combination of a bifurcated hanger, atype bar pivoted between the arms of said hanger, fingers which projectinwardly from said arms and bear at their sides against the sides of thetype bar, and contacts on the type bar which cooperate with the ends ofsaid fingers at the last portion of the printing stroke of the type bar.

16. In a typewriting machine, the combination of a type bar, a hangerhaving an inwardly extending projection against part of which the heelof the type bar bears, and a contact on the type bar that is broughtinto cooperation with another art of said projectionat the last portionof t e printing stroke.

17. Ina typewriting machine, the combination of a type bar, a hanger,inwardly projecting fingers on saidjhanger, each of Which fingers at onepoint cooperates with a side of the type bar, and contact devices onopposite sides of the type bar, said contact devices cooperating withsaid fingers at other points thereof and at the last portion of theprinting stroke of the type bar.

18. In a typewriting machine, the combination of a type bar, a hangerhaving inwardly projecting fingers which bear against the type bar onopposite sides thereof, and a pivot formed of trunnion-like projectionseach provided with an eccentric which is brought into cooperation withits associated finger on the hanger at the last portion of theprintingstroke'of the type bar.

19. In a typewriting machine, the combination of a pivoted type bar, acontact thereon, andan abutment for said contact adjustable towards andfrom said contact.

20. In a typewriting machine, the combination of a pivoted type bar, aneccentric thereon, and an, abutment therefor adjustable towards' andfrom said eccentric.

21. In a typewriting machine, the combination of a pivoted type bar, andmeans for automatically taking up side shake and means for automaticallytaking up end shake to the type bar in its pivotal bearings at the lastportion of the printing stroke.

22. In atypewriting machine, the combination of a pivoted. type bar, andindependent means automatically brought into action at the last portionof the printing stroke to prevent lost motion of the type bar in itsbearings in two directions at right angles to each other.

23. In a typewriting machine, the combination of a pivoted type bar, andindependent means automatically brought into action at the last portionof the printing stroke to prevent lost motion of the type bar in itsbearings in two directions at right angles to each other, part of saidmeans being capable of adjustment.

24. In a typewriting machine, the combination of a pivoted. type bar,and a hanger provided with tapering walls directed towards the pivot ofthe type bar and between which a part of the type bar fonvard of itspivot swings and is guided during the final portion of the printingstroke.

25. In a typewriting machine, the combination of a pivoted type bar, anda hanger provided with a pair of guiding fingers adja cent to andprojecting towards the pivotal center of the type bar and cooperativewith the type bar at the final portion of the printing stroke.

26. In a typewriting machine, the combination of a pivoted type bar, aU-shaped hanger in which the ends of the pivot of the type bar aremounted, and a pair of devices having guiding walls or surfaces arrangedsubstantially parallel with the arms of the hanger and cooperative witha portion of the typebar during the final portion of the printingstroke.

27. In a typewriting machine, the combination of a type bar, a U-shapedhanger therefor, a pivot fixed to said type bar and mounted at its endsin bearings in said hanger, and a pair of guiding fingers on said hangerprojecting towards the axis of said pivot and having guiding walls orsurfaces substantially parallel with the arms of the hanger and thesides of the type bar.

28. In a typewriting machine, the combination of a pivoted type barhaving contact devices on the sides thereof adjacent the pivotal portionof the type bar, a type bar hanger, and means thereon for causing atransverse movement of the pivot of the type bar and an endwise movementof the latter during the final portion of the printing stroke.

29. In a front strike typewriting machine, the combination of a pivotedtype bar and hanger arranged at the side of a segmental support, saidhanger being provided with a pair of alining jaws and said. type barbeing provided with a pair of contact devices whereby during the finalportion of the print ing stroke the type bar is mechanically adjustedboth laterally and longitudinally.

30. In a typewriting machine, the combination of a pivoted type bar, anda hanger,

said hanger being provided'with a pair of Signed at the borough ofManhattan, city 10 alining jaws and said type bar being jo'roof NewYork, in the county of, New York, vided with a air of contact devices,the conand State of New York, this 19th day of striilctilon a1;laraangefmint of the) partsbeing February A. D. 1907.

suc t att esi eso t etype ar an said contact devices are brought intocooperation JGHN HENNESSY' with said jaws at the last portion of theprint- Witnesses: ing stroke and the type baris mechanically E. M.WELLS. adjusted both laterally and longitudinally. M. F, HANNWEBER.

